Consumercarts is reader-supported. Learn more
Alphacool Subzero vs Arctic MX-4: Comparison
Alphacool Subzero and Arctic MX-4 separate most on thermal conductivity: Alphacool Subzero at 16 W/mK, Arctic MX-4 at 8.5 W/mK, 47% in favour of Alphacool Subzero. They match on electrical conductivity, safety notes and paste segment.
Specs
| Specification | ![]() | ![]() |
|---|---|---|
| Compound Type | High-Performance Silicone-Based | Carbon-Based |
| Brand | Alphacool | Arctic |
| Model | Alphacool Subzero , Subzero | Arctic MX-4 , MX-4 |
| Thermal Conductivity | 16 W/mK | 8.5 W/mK-47% |
| Electrical Conductivity | Insulating | Insulating |
| Package Size | 1g / 3.5g / 20g tubes | 4g / 8g / 20g / 45g tubes |
| Recommended Use | High-end CPU/GPU (including overclocking) | Mainstream CPU/GPU (builds on a tight budget) |
| Reapplication Interval | Verify manufacturer-rated interval | Up to 8 years |
| Safety Notes | None | None |
| Paste Segment | Standard Paste | Standard Paste |




